To GOOGLE and Beyond...

Search Engines:

http://www.thesearchenginelist.com/ - very extensive list of many search engines for various purposes
http://www.noodletools.com/debbie/literacies/information/5locate/adviceengine.html - nice search guide to help in deciding which is the best search engine to use
http://ivyjoy.com/rayne/kidssearch.html - list of kid friendly search engines

http://www.wolframalpha.com/
http://www.dogpile.com/
http://www.bing.com/
http://www.askkids.com/
http://www.refdesk.com/newsrch.html